Build problems on i386 (Fiasco-OC.UX)
paul at boddie.org.uk
Mon Jan 29 22:36:34 CET 2018
More awkward news from Debian on i386! I was looking to build the "Linux
Usermode Platform" variant of Fiasco-OC on i386 (well, Pentium 4) and
encountered a couple of issues.
Firstly, "struct ucontext" is mentioned in src/kern/ux/usermode.cpp but has
been deprecated in favour of "ucontext_t". There are some User Mode Linux
reports about this:
A search-and-replace involving the two terms fixes the compilation error that
Secondly, linking of the kernel fails due to symbol conflicts between the
minilibc functionality and glibc:
(.text+0x0): multiple definition of `memcmp'
first defined here
collect2: error: ld returned 1 exit status
for target 'fiasco.debug' failed
So, not knowing how best to deal with this, I relied on the --allow-multiple-
definition linker option:
I doubt that this is the right way to deal with it. Maybe GCC 6.4 (Debian
6.4.0-12) introduced some behaviour that is not compatible with the way this
linking is being done.
Both of the above issues are present in repository versions 74, 75 and 76 at
the very least. Certainly, the first issue is not likely to be absent in
P.S. I have also been experiencing a build problem with L4Re on i386, but this
will be described in another message.
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